Hi,I am a newbie to SB, I am using 1.3.1 beta on a MacBook with Yosemite on it.I made a simple delay, it works on SB so I tried to export (and install) it but Logic Pro X don't seems to see it. I enabled 64 bit, what am I doing wrong? Thank you for you time.

The 64 bit mode in the original SonicBirth is for internal processing resolution only. The plug-in itself will always present itself as a 32 bit plug-in, thus not loading in 64 bit only app like Logic Pro X.

Have you tried the new Sonic Birth? You will be able to make fully compatible 32 and 64 bit plug-ins with it.